As you might expect when the caulk eventually fails a trickle of water will leak through and drip down through the ceiling below.
Vent pipe leaking in attic.
Roof has been checked and sealed it isn t the issue.
A roof that leaks around a vent pipe is a common cause of small water stains on a ceiling or water leaking into a home.
These boots vary in quality flexibility and longevity.
Other causes of leaking roof vent are including broken seams on the metal base loosen nails and rusty metal collars around the vent pipe.
Plumbing vents which are blocked by ice freezing inside the vent line.
Areas where leaks have.
Given the most common causes is cracked or damaged rubber boot the most ideal solution is to remove it and replaced it with a new one.
In freezing weather if a lot of water vapor is passing up the vent line for example from long steamy showers or perhaps from a hot water fixture left running or leaking into the drain system frost can form in the vent piping where it passes through a cold attic and outside.
Attic condensation is due to humid air leaking or vented into the attic.
However leaking roof vent usually happens at the worst time.
When the roof vent is leaking the actual cause must be identified first.
There is a 5 inch galvanized furnace vent pipe in the attic that goes out the roof.
The easiest solution is to saw out the caulked joint removing about 1 in.
Water is leaking from the seams of this pipe when the furnace runs.
Of pipe two cuts.
The leaking may first be seen in the attic but if you don t catch it right away you may see water coming into the house dripping on the floor.
The other possibility is that a large amount of air is leaking around the holes in the dw and depending on the house.
Vent humid air from kitchens and bathrooms to the outside instead of the attic to avoid this problem.
In addition this joint creates a ledge inside the pipe where water from rainfall can collect.
Normal condensation in a plumbing vent pipe should stay within the pipe.